Cooling-tub.



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Patented Apr. 29,1902.

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COOLING TUB.

(Application filed July 16, 1901.)

Y H. T. MYERS.

(N9 Model.)

Hdhjzsses l I f m: mums pawns co, Puovuuwo.. msmnaro UNITE STATESl HELENT. MYERS, OF COLORADO SPRINGS,` COLORADO.

COOLING-TUB.

SPECIFICATION form'mg part of Letters Patent N o. 698,725, dated April2K9, 1902.

Application filed July 16, 1901.

T0 @ZZ whom/.it 71u03/ concern:

Be it known that I, HELEN T. MYERS, a citizen of the United States,residing at Colorado Springs, in the county of El Paso and State ofColorado, have invented a new and useful Cooling-Tub, of which thefollowingis a specification.

This invention relates to cooling-tubs for reducing the temperature ofarticles of food, milk, and 'the like forthe purpose of preserving thesame; and the object of the same is to provide a device or organizationof elements based on the law of evaporation and as manifested in theMexican olla or watercooler and which rely upon the use of a-porous orsweating inclosure or jar to cool the water therein by surfaceevaporation and to utilize this well-known operation to coperate with aninteriorly-located vessel of metal or non-porous material for containingfoods, milk, or perishable articles to preserve the latter Without theuse of ice or other cooling instrumentalities, and thusproduce a devicewhich is adapted for use in very warm or tropical climates, where ice isnot obtainable'- or is beyond the reach of limited means.

The invention consists in the construction and arrangement of theseveral parts, which will be more fully hereinafter described and.claimed.

Figure 1 is a perspective view of ycoolingtub embodying the features ofthe invention. Fig. 2 is a transverse vertical section of the tub on alarger scale.

Similar numerals of reference are employed to indicate correspondingparts in both views.

The numeral 1 designates an outer porous vessel which is open at the topand has lower supporting-legs 2 to permit the air to circulate under thebottom thereof. This vessel 1 may be of any suitable dimension andpreferably circular in form, because said shape of porous vessel is moreeffective inthe operation desired to ensue, a smooth exterior circularVsurface avoiding obstructionto air-currents around the vessel, andthereby accelerating evaporation. This shape is also preferred for theaccommodation of the ventilator, which will be hereinafter described, aswell as to prevent the cooler being pushed into a corner, thus cuttingoff all circulation of air. The lower portion of the said vessel isprovided ,14 or any other suitable device.

Serial No. 68,541. (No model.)

with a drain-opening, in which a plug 3 is normally fitted.

Within the vessel 1 a metallic receptacle 4, preferably formed of zinc,is disposedand is of less diameter than said vessel, so as to provide aninterspace between the receptacle and Vessel for the introduction ofwater. The bottom of the receptacle 4: is providedy withradially-arranged strips 5 to permit the presence of Water thereunder,and at its top or upper endsaid receptacle has a lid or cover 6,comprising a metallic pan 7 which is adapted to rest directlyon theupper edge of the receptacle, and a'porous top plate 8, held in closerelation to the pan 7 and in contact with the water contained in thelatter by metallic edge clamps 9, the joint between the said parts beingrendered water-tight by the introduction of a rubber or other gasket 10.The clamps are freely removable, so that the pan'and plate may beseparated at any time desired for cleansing or other purposes, andrising centrally from the plate is.an arcuate tubular member 11,communicating with diametrically-disposed ports 12 in the plate andserving as a handle or grip for raising said cover, having an upperinlet 13 for supplying the pan with water, the said member when filledwith water serving also as a reservoir for automatically replenishingthe continual loss of water in the pan by evaporation. The inlet 13 ofthe member 11 is closed by a plug The pan 7 is preferably hinged to thereceptacle 4, as at 15; so as to easily gain access to said receptacle,

Aand within the latter it is proposed to arrange suitable supports orracks for holding articles of food, milk, or other materials, and alsoupper drop-handles 16 to assist in removing the receptacle from theouter vessel.'V Around the upper portion of the receptaclel areventilating-apertures 17 to permit the escape of foul air from thereceptacle, and connecting with the lower portion of the receptacle andpassing through the water between the vessel 1 and the receptacle andwound about the latter is a exible tube 18, which exits through a notch19 in the upper edge of the 'vessel'and is provided with a terminalfunnel 20, which permits the fresh air to pass down into the receptacleand become thoroughly cooled before entering the latter. For conveniencein IOS handling the vessel l it is provided with grips or handles 21.

In preparing the cooling-tub for use Water is poured into the interspacebetween the receptacle 4 and the vessel l by the use of a funnel orother means, the Water being caused to extend verticallya distanceslightly below the apertures 17 in the receptacle. l/Vater is alsointroduced into the arcuate member 1l and from the latter into the pau7, the quantity poured into the said member being sufficient to replacethe reduction of the water in the pan by evaporation, so that saidporous plate covering the pan will be continually kept in contact withthe water, the evaporation taking place through the plate 8. The waterin the interspace between the receptacle and the vessel will bereplenished from time to time, and the food or other articles placedwithin the receptacle will be cooled and preserved, and the exteriorofthe receptacle will also be ventilated to keep the food sweet andpure. It will be understood that the evaporation which will ensue at thetop and bottom and around the sides ot the vessel will cause theinclosed water and by conduction the interior ot' the receptacle to havesuch a low degree of temperature as to chill and preserve articlesplaced therein and will be of great benefit in cooling milk, meat,butter, and similar foods without the contaminating proximity of ice orother refrigerant, from which dampness and absortion might ensue.

The cooling-tub is applicable for many purposes, and the size thereofwill be varied as may be desired. l

YHaving thus described the invention, what is claimed i'sl. Thecombination with an outer porous vessel, a metallic receptacle of lessdiameter than said vessel mounted in the latter, and a lid or cover forthe receptacle comprising a pan and a porous plate thereover, the latterhaving a tubular grip in communication therewith to serve asaWater-feeding means therefor.

2. The combination with an outer porous vessel, a metallic receptacle ofless diameter than said vessel mounted in the latter, the bottom of thevessel being elevated above its support and the bottom of the receptaclebeing held above the bottom of the vessel, water being introducedbetween the receptacle and vessel, a lid or cover for the receptaclecomprising a water-pan and a porous plate removably attached thereto andhaving an arcuate tubular member rising therefrom to serve as a grip andmeans for supplying water to the pan, and means forsupplyiugfresh air tothe receptacle and cooling the air before entering the latter.

3. The combinationof an outer porous Vvessel, a metallic receptacle ofless diameter than said vessel and mounted in the latter, the bottom ofthe vessel being provided with legs, and the bottom of the receptaclebeing elevated above the bottom of the vessel, water being introduced inthe interspace between the receptacle and vessel, and a lid or cover forthe receptacle comprising a waterpan and a porous plate removablyattached thereto and having an arcuate member rising therefrom to serveas a grip and as a means for supplying water to the pan.

In testimony that Iclaim the foregoing as my own I have hereto aftixedmy signature in the presence of two'witnesses.

HELEN T. MYERS. W'itnesses:

B. M. Honor-Ns, E. A. STETsoN.

